Adding-machine.



G. E. LAMB. ADDING MACHINE. APPLICATION HLED SEPTJHWH.

Patented July 10, 1917.

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G. E. LAMB.

ADDING'MACHINE.

Armcmon rum SEPT-27,1913.

1,233,066. Patented July 10', 1917.

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I ADDING MACHINE. APPLICATION man szrnzr, 191a.

Patented July 10, 1917.

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$233,066. Paten'md July 10, 1917.

I H: II m unnllllllllllllll Lessons.

UNITED STATES PATENT OFFICE.

GEORGE E. LAMB, 0F RANDOLPH, VERMONT.

ADQDING-MACHINE.

fication, reference being had therein to theaecompanying drawing.

The general object of this invcntion to provide a rapid and convenient pocket adding machine such that correct sums must "necessarily be registered when the machine is' properly' operated unless parts of the mechanism be broken, and such that, withoutfiinaking parts too small or delicate for practical service, the whole may have approximately the size and appearance of a. watch. \Vith this object in view, means are provided for adding columns in succession beginning with the highest or the lowest,

'5 for having the apparatus operated by a main spring to register the proper amount,

when parts corresponding to the figures to be-added are momentarily pressed, for locking the parts against accidental movement afiecting the amount'registered; for winding the main spring by rotating the stem, and for resetting at, zero, these being .de' sir-able and for the most part well known results, which. however, I obtain by constru'ction involving novelty.

, In the drawings,

' Figure 1 is a face view ofthe apparatus when 'inclosed in a suitable case.

Fig. 2- is an enlarged similar view, the

caseand a dial plate being omitted and'some othenl-parts being broken away.

-. lfi'shows a sectionon the line 3-3,

Fi 5. Q

A Figdis a section on 'the line 44, 2. Fig.5 is a section on the line 5, Fig. 2.

. Fig. 6 is a detailyiew ofregistering and resetting devices.

' Fig. 7 shows a section on the l1ne.7'7

Fig. 6.

Fig.8 shows a section on .the curved line s -s, Fig. 6.

.-Fig. 9 is a detached, detail, diametrical section showing parts of registering and resetting devices. i l I Fig. 10 is a section parallel to and ]ust below agear 54, Fig. 4.

'F-ig. '11is a-'perspective view of pawl devices of Fig. 10.

Specification of Letters Patent.

Patented July 10, 1917.

Application filed September 27, 1913. Serial No. 792,155.

tral, normally pawl-locked main gear which is urged to rotate by a mainspring, a series ofdistinct similar registering devices alongside the plane of the main gear. within the line of its periphery, and equidistant from its axis, two pinions fixed to the same shaft, the first engaging the main gear at all times and both movable about that gear to bring the second into engagement with any one of the registering mechanisms; sliding pins correspondin respectively to the nine digits; means whereby pushing any of the pins unlocks the main gear and at the same time projects the pin into the path of a stop limiting the rotation of the gear differently according as one or another of the nine pins is pushed, whereby the main gear and said second gear, with the particular regising a spring for urgingv return movement.

It also involves manually operated means wherebythe spring last mentioned is allowed to cause such return movement, step by step; also means whereby all the registering mechanisms may at will be restored 'to initial zero indication; also for winding the mainspring; and also for locking against accidental change of indication. Still further, the construction is such that the different orders of numbers may be added in any desired sequence.

In these views, 1 represents the casing in substantially the form of a watch case. This case contains a main frame made up of para lel circular plates 2, 3, 4, rigidly con nected by posts 5 and supporting most of the working parts.

at 7 to-show registry numeralsand at. 8 to permit the insertion ofa pencil or the Above or in front of the plate is fixed a disk- 6, Fig. 1, perforated like to actuate the mechanism for adding the numbers designated bynumerals along- Side the apertures, -respectively. Near each opening 7 is a small perforation 9 to be automatically covered and uncovered by a while: area at 2, Fig. 2 upon a member 36, thus indicating to the; eye when the apparalus is set for adding a particular .column, whether units, tens, hundreds, etc. 10 represents a mainspring barrel having ,periph-.

eral teeth 11 rotatable about a shaft 12, and containing a mainspring 13,-which drives a gear 14, pinion- 15, gear 16-, and fixed to the shaft 12, which carries above the frame plate 3 a main gear 18, engaging a pinion 19'Figs. 3 and 5 for driving registering devices to be described. The gear 18 20 (Fig. 3) pivoted at a on the frame plate 3. -Abo.ve the gear 18 is revolubly mounted upon the same shaft a peripherally geared segment 21 of-slightly smaller radius than the gear and having teeth adapted to register with those of the gear and' above the sectorand fixed thereto is a thin sector-like plate 22' (for convenience infmanufaeture made as a separate piece) of greater radius. One side of thisplate is stepped and provided with circularly cut, open slots 23 the-inner end walls of the slots and intermediate portions of the plate being at pro ssively increasing distance fioin the radius extending from the axis of the shaft to the outer limit of the stepped margin of the plate. Above the sector plate a block 24 is fixed to the ,frame plate 4 (Fig. 13), and in saidplate and block are mpun two rows of vertical pins 25 correspon ing to t-he apertures S (Fig. 1). Each pin is provided, below the plate 4, with a conical enlar ement 26 and is normally held in its uppe ostposition, above the plate'22, by a spring 27 and with its cone ab .e a radial pawl-retracting slide 28 normally'h which respectively, the pins 25 pass through the plate, as seen in Figs. 2 and 5.

' the eone-onthe same pin pushes the slide 28' radiallyoutward. The outer end of this .sl-ide being connected to the pawl 20 by an or link31 (Figs. 3, 5) this. swings the out of engagement and at the same time tli ows into engagement with both 18 and 21 a thick or double pinion 32 mounted on the opposite arm of the pawl. .The gear 18 being 'free it is suddenly rotated by the inion 17 eld in the position shown in Fig. 2 by a spring 29 acting on an a'rmBO -of the slide. Theslide '28 is cut away -to' form elongated openings near the ends of mainspi ing, and since the pinion 32 engages theteeth' of both this gear and the segment 21, the latter rotates to exactly the sameextent carryingtheplate 22 forward, until' its stepped margin strikes the depressed-pin and arrests the rotation. The angular ex.-

tent of this rotation corresponds to thealongside the pin which was depressed.

The instant the depressed pin is released,

.number of .units inithe number (Fig.1)

out of engagement, and a .spring 33 restores the segment 21 and plate 22 to initial position resting against-a stop 0.

. All this is repeated as often asany pin is ,depressed. is normally held againstrotation by-a pawl:

Each momentary rotary'movement of the :1

gear ,18 actuates registering mechanism (for convenience mounted on a subordinate framework 51 carried by the 'main frame)" through its engagement with the pinion 19,

mounted upon and rotating a shaft 34 which which a tooth, correspondingto the charact'er 'O on the disk 39 is removecha pro- Ljecting fast finge'r.41, between the gears 37', v 40, and a fast finger 42 above. the latter gean.

As the shaft 38is rotated by the main gear l 18, the/finger 4 1, acting-through a gear 43,

at the eu npletionfof each revolution f rotates the gear 37, of the next higher disk .39, one

step. The units-gear 37'is yieldingly held to preventaccidental movement. by apawl 44 (Fig.6) and normally all the. gears 43 are similarly held-by stops 45 carried by sliding members 46 and normally held in eii-' gement-by springs 47. q The member-46 as an arm 48.the end of which normally lies in th path: of the finger 42 and in such 1 position thatthe latter pushes the member. -1nward so that the stop 45r'eleases'thegear} 43 while the latter is actedupon'by'the. finger 41.. "It follows from the described construction that when the frame 36 is so turned as'to engage the gear 35with any pinion 37,

rotation 0f the main gear 18 will rotate that pinion" 3.7 and its disk 39 withott affecting any disk of'a lower order but adv vancingthe diskof the next higher 0rd sr one step at the completion of each revolu tionof the gear 37. Each :pinion 37,1 40.

has. of course-the usual ten tooth spaces registering with the ten characters on the corresponding disk 39.

.For re-setting all the disks ,to z 'g sge geared segment 48, Fig. 6, in the planeof the plmons 40, is pivoted to bell cranks 49 p voted 1n the frame 36 and connected by a a link 50 in such manner that when the arm I of one'bell crank'is mov e d,in the proper disuccession bringing the zero of, each disk 39 to its aperture 7, Fig. 1, in-which position 1t remains because the removal ofthe zero tooth of each pinion leaves at this point nothing to belafi'ected by the teeth of the geared segment. The re-settingbeing completed the geared segment'is automatically moved'out. of actionlby reverse movment of the bell crank arm, caused by a stop m, Fig. 2, and a suitable spring 51 gently resists its movement from inner or outer position. To

insure accuracy in the position of the geared segment whenmoved' inward, for resetting the long circularly curved bar 52' is fixed to the plate inposition to slide in contact with the outer ends of sever'a'hoftheslides 46 at the same time; and,- for adding the bar being in outward position, arounded stop cl, Fi

6 and 7, pushes the slides inward, separate? i r as they are separately brought to adding position, thereby unlocking each pinion 43 while" the next pinion 37 to the left'isbeing 1. rota-ted by'the pinion 35.

a rotation of the stem 55.

For swinging the frame 36 back and forth, a gear 53 is fixed to its axial hub (Fig. 9) and this engages a gear 54 (Figs. 3, 4) which is "at will manually rotated clockwise by .the stem 55,"projecting from the casing, and acting through a bevel gear 56, bevel and spurpinion 5T, rigidly connected' .(or very thick) pinions 58'which at proper times mesh with the'gear 54. The

pinions 58 are mountedon a bar 59 pivoted centrally to swingabout the axis of the pinion 57 and so swung by a; push pin 60 acting I againstthe resistance of a spring 61, to dis- 50 engage the pinion 58 and; throw a gear 62, mounted on the'opposite end portion ofthe bar 59 into engagement with the mainspring barrel gear for winding the mainspring by The gear 62 is made in two ratchet connected parts, as in watch-winding devices, so as to permit alternate forward and backward rotation of the stem. Tension put upon the mainspring is retained by th'e spring )awl 63 Fig. Belo wthe' gear 54," igs 3, 10,11, 12, a pawl'64 is pivotally mounted upon a bracket of the middlc'main-frame plate to swing about a center 65 into and out of the path of equally spaced pins 66 depending in a circle from the gear 54 which transmits mo- What I claim is:

the stem to winding orto the actuation of tion to the frame 36 as has been shown; and which, through the action of a spring 67, E 1g. 3, normally holds that frame in position for actuating the units pinion of the registering devices. The pawl isnormally held out of the path of the pins'by a spring 67, one of the pins however being normally engaged by a second holding pawl 68 yieldingly urged into engagement by a spring 69. The pan-164 is thrown into the path of the pins and the pawl 68, withdrawn therefrom by a push bar 70 actuated-by an axialsliding' rod 71 in the stem-55 and normally held retracted bya spring 72, and when this movement of the'pawlsoccurs the gear is at once rotated by its'spring until one-of the pins strikes and is arrested by the pawl 64. Cessation of pressure on the push rod allows the springs to restore both pawls to normal positions, with the pawl 68 engaging the pin next succeeding that beforegheld. The net result, then, of pressing the push rod 70 is to rotate the gear 54'one step, with corresponding angular movement} ,o f the frame 36, this step bein just enough to more the pinion 19 from one pinion 3'? to the next, thatis from one order of numbersto the next. The pawl 68 is so formed that while it normally holds the gear against rotation it permits the pins to escape when the gear is forcibly rotated by the pinion 58. While substantially the same mechanism may pro ride for adding either units or higher orders first, in the particular embodiment illustrated, if it be desired. to add higher orders 10c first the gear 5% is manually rotated clockwise by the pinion 58 to, carry the frame 36 to the left-hand limit of its path, and is returned step by step by the spring'fi? when the pa'wls 64, 68 arerepeatedhv operated in the manner alreadydescribed. by pressing the pin 71. Thus the adding mechanisnris, moved from units adding position by manual rotation of the stem, the movement always increasing the'tension of the spring 67', and is returned, step by step. by that spring when pressure upon the pin 71 re-, peatedly actuatcs the pawls which hold the gear 54 against rotation. a

1.- The combination with similar register ing mechanisms for-teach order of numbers, of spring-driven means for actuating any one of said mechanisms, a rotary stem for winding the sprin devices for moving said means into and o t of operative connection with any one of said mechanisms, and means for at will applying the rotary power of said devices. The combination with distinct registering mechanisms for the orders of numbers, respectively, arranged in a plane equidistant from a central axis, of spring-driven means adapted to be, moved into operating 9 a engagement with any of said mechanisms, devices for manually movmgsa d means in one direction from mechan1sm to mechanism, spring-actuated devices for moiring, said means in the contrary direction from one mechanism to.the next, and manually operated means for releasing the springactuated devices, to allow such movement.

3. The combination with de-.-

vices, or a normallylocked sprlng actuated 'ger for diiwingsME-devieeQtsegment inpendent-1y .revoluble about the gears ams teeth :-a inion adapted to Q: bathmg rowing the pinion into: engagement, meansfor the rotation at a ing the ant to initial podtion when the {and holdin :ittem y means for'cans g I J E g the *spnn actuated means for swinging said device m a con a fixed axigofa'member 'alimited path aboutfthe predetermined point, an means for restor- 4. The-combinationwith a series 6f dis,-

- tinct "'devi iorfthe difierent orders of numbers, ant from a cenminis, of a nomi li device more distant moun to swingbodily aboutsaidaxisinto-o ra f' 'tive connection, successively, with; sai vices, means for said device Eng it towbecome active w e so-lield, and

v K direction.

. 5. Theleompination witha of tinct re like mutil inions circularly about mounted upon said member'to move into and out of position for fenga'ging said inions as the member means' w iereby saidrack'is opposi y as-said' mema ban reaches, thelimits 0f 'it8 movement.-

536mm,: a geared sector of 6. The combination-with aispring-driven andregistering' mechanisms 0 hltille g .Y

3' smaller radius than said gear mountednear engagement with the re devices .-m turn, automatic meansforg the y inactive mugs,

throuli' initial position of the sector, manually operable means for at will disengaging said saving the pinion and locking said. ear

sector free, and a spring or restori said 'sector to initial position when freed ythe pinion. p

-7. Thecombination with a spring-rotated,

normally locked, gear, offa series of'similar ared re 'stering devices equidistant from c axis 0 the gear, a pinion swinging about said axis to b g frame its pinion om the A proper devices and locking all others when saidpinion is in positi'on to actuate. any. one of-them, a; curved rack mounted on the said frame, means for at will movin the rack injward to positionfor eseveral re rin devices, for

all at zero, means or automatitally holding the rack in its inward and ontward-tgositions, and automatic means for moving ting swing of the frame is completed,

8. The combination with. a casin of a casing, a springactuatiiigithe driving "gear rack outward when the ared reg stering-devices equidistant from angular 'vement about the 'axi's'of the gear, a pinion b k djforth A In mm .--whe 9 :.-'I 9,...Wb w? e axis-ofisaid gear, aframe mounted for 7 I 85 the hamster device in turn, a-.-

. -f' so many si natur v G RGEiE- A 'K, 

